Ransomware Research

Raptum Ransomware

Raptum is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on April 1, 2026, this ransomware has been actively targeting systems worldwide.

Quick facts

Ransomware Family
Raptum
First Seen
April 1, 2026

How Raptum ransomware works

File modification behavior

Raptum updates file modification timestamps after encryption.

File encryption patterns

Raptum modifies encrypted files using specific patterns to mark them as encrypted:

Extensions added after encryption
  • .raptum55

Ransom note and payment demands

After encrypting files, Raptum displays ransom notes demanding payment for file recovery:

fileRECOVER_DATA.html
notes/RECOVER_DATA.html

Location: EveryFolder

Technical indicators

Associated executable files

The following executable files are associated with Raptum ransomware:

  • rap55.exe

About this analysis

This Raptum ransomware analysis is part of Elastio's comprehensive ransomware detection database. Elastio provides advanced ransomware protection and recovery, helping organizations defend against and recover from ransomware attacks like Raptum.

Last updated: September 16, 2026

Detection coverage

Elastio detects Raptum inside your data and backups.

The Hunt Engine uses Deep File Inspection to identify Raptum across live data, replicated data, and backups. If this family is in your environment, Elastio finds it before encryption completes. Run a hunt against your recovery points to confirm.